Dishwashing machine



Jan. 19 1926; 1,570,296

H. CAVE .nI SHWASHING MACHINE Filed Feb. 4, 1920 s Sheets- Sheet 2 INVENTORY %//W I FM ATTORNEYS.

v 1,570,296 H. CAVE nzsrmsnme MACHINE Filed Feb. 4, 1920 s Sheets-Sheet 5 5 5 a m a 4 w 5 n? n n. m m y n a a F g" Jan. 19 926.

j anbmtoz Patented Jan. 19, 1926.

UNITED STATES PATENT OFFICE.

HENRY CAVE, O1" HARTFORD, CONNECTICUT, ABBIGNOB TO G. B. S. PRODUCTS, INC.,

. NEW YOltK, N. Y., A CORPORATION.

msnwasnme Macnmn Application filed February 4, 1920. I Serial Io. 356,;08.

To all whom it may comm Be it known that I, HENRY CAVE, a citizen of the United States. of America, residing 'at Hartford, in the county. of Hartford and State of Connecticut,-have invented certain new and useful Improvements in Dishwashing Machines, of which the efollowing is a specification.

This invention relates to improvements in machines for washing dishes and the like, and more particularly, to improvements such as are designed to render machines of this character suitable for household use.

A feature of my invention is the provision of a dish washing machine which is portable. The machine may be said to combine in one, a dish washing machine and the so-called utility wagon commonly provided for household use.

According to this feature of the invention, the machine is utilized as an aid in transporting the articles to be washed. Thus, the machine may be rolled into the dinin'g room alongside the table and the dishes placed there in position to be washed. Then the machine may be rolled tothe kitchen sink to receive, with the expenditure of'a minimum amount of effort, the washing and rinsing water. Afterwards, the machine is rol ed to the cupboards, china closets and so forth and the dishes removed. The.

dishes need be handled only a minimum number of times and the operator doesnt have to make frequent trips and carry heavy loads. 7

Another feature of the invention consists in the subdivision of the machine into two units,-one to contain the articles to be Washed andthe other a power plant unit,

which is preferably, although not necessarily, portable.

According to this feature, the relatively heavy, more or less awkward and unsightly unit,'the power plant,may be left in the kitchen and only the light unit, which may be designed to present an attractive appearance, need be moved to and from thedining room. The unsightly motor, pump hose and so forth, are kept out of sight as they should be. v

Another feature of the invention consists in providing a washing tank having supporting racks for the articles to be washed and a movable bottom portion, characterized in that, after the washing operation, the

, into the interior of such articles.

' bottom portion (which contains the water) may be moved away from the racks to allow a free circulation of air upwardly through the racksand dishes, the more efiectually to dry the latter.

Another feature of'the invention consists in providing a portable washing tank having a reservoir in the base thereof with a Other objects and advantages will appear in the following description and in the illustrative embodiment of the invention in the accompanying drawings, in which- Fig. 1 is a side elevational view with parts broken awav, of a portable dish washing machine embodying the invention;

Fig. 2 is a plan view thereof;

Fig. '3 is a fragmentary cross sectional view taken on the line 301 Fig. 2 and showing the suction pipe tank and-movable bottom portion thereof; i

Fig. 4 is a sectional plan view taken on the line 44 of Fig. 3; I

Fig. 5 is a fragmentary cross sectional view'of the tank with the bottom removed;

Figs. 6 and 7 are fragmentary views, partly in section, illustrative of the quick detachable connections for the spray pipe and suction pipe, respectively; Fig. 8 is a sect'onal plan view taken on the line 88 of Fig. 7; and

Fig. 9 is an elevational view of both units of the machine, illustrative of the operation thereof. 4

. Fig. 10 is a section on the line 10-10 of Fig. 1.

Referrin washing unit proper is shown in Figs. 1 and 2. It comprises essentially a tank 15, preferably having a displaceable bottom section 16, and a wheeled supporting frame. As illustrated, the latter includes a central longitudin'al member 17, having end upright extensions 18 forming an open U-shaped frame, to the upper ends of which the to these drawings; the dish no I an axle 20 by two wheels 21 thereon, one

of these wheels being on each side. Near each end of the member 17 are attached swivel casters 22. Thus, the described frame and washing tank are portable and may be readily rolled from place to place as desired.

The tank 15, including its displaceable bottom portion 16'when in elevated position, is preferably arranged at a substantial distance above the frame member 19. This allows of the use of a tray 23, which is supported upon member 19 and may be slid sidewise inwardly or outwardly thereon within limits, as desired. Lugs 24 on the uprights 18 bear against the top edges of the end walls of tray 23 to prevent it from I tipping when pulled outwardly beyond its normal position, wherein it underlies the tank 15. Lugs 25 (one of which is shown in Fig. 1) fixed on. tray 23 substantially centrally between the front and rear longitudinal portions of frame 19 (as viewed in Fig. 1) are arranged to abut the front longitudinal portion and limit the outward movement of tray 23 to such an extent that its rear edge is not carried beyond the lugs 24. Removal of the tray 23 is accomplished by lifting its front edge, when in its extreme outer position, sufficiently to permit lugs 25 to ride over the front longitudinal portion of frame 19. The tray 23 serves to receive dishes, such as those containing food,

which cannot be placed intank 15 untilthe food has been removed.

The displacea-ble bottom section 16 is in the form of a tank and its side and end walls are arranged to telescope over the corresponding walls of tank 15. The section 16 is designed to hold all the water which is necessary for one washing operation. The section 16 is supported by a vertically disposed suction pipe 26 which is slidably guided and frictionally held in a bracket 27 fixed centrallyto a longitudinal side wall of tank 15. Pipe 26 carries at its-lower end a fanshaped 'jenlargement 28 (Figs. 3 and l) which is secured, as by riveting, to the bottom wall of section 16, suitable spacers 29 bein' provided to space the lower edge of mem or 28 above the bottom of section. 16. The enlargement 28 permits the machine to be operative with only a small amount of water: in the section 16 and distributes the suction over a greater area of the section. Moreover, practically all the water can be removed from section 16 by suction, when desired. The section 16 is releasably held in raised position by a yoke 30 hinged to tank 15 and arranged to encompass pipe 26 and underlie amember 31 thereon. Such member is part of a quick detachable connection to be described and has handles 32 whereby it, the pipe 26 and section 16, may be manually lifted or lowered, when desired or the section 16 may be lifted or lowered by placing the hands on opposite sides or opposite ends of the section 16 and pulling the same up or pushing it down. Section 16 is supported directly upon the trap 23 when in lowered position.

The tank 15 is provided with suitable racks to support thedishes or other articles to be washed. For example, racks 33 and 33" of wire, suitable for supporting hollow articles such as cups, glasses and so forth, are provided on the end walls of tank 15, preferably, in several horizontal series arranged at different levels, as shown in Figs. 1 and 2. For dishes, which are most effectively washed when stacked on edge, a grid-like member is provided which consists of a series of spaced longitudinal slats 34 connected at their ends to cross bars 35. The cross bars 35 rest, at their ends, on' lugs 36 fixed as by braising or welding to the lower edges of the side walls of tank 15 as well shown in Fig. 5. Vertical projections 37 on at least two of lugs 36 engage the inner edges of cross bars 35 and prevent longitudinal shifting of the grid-like rack, lateral shifting being prevented by abutment of cross bars 35 with the walls of tank 15. The grid-like rack is thus supported for convenient removal and it is also so located as to leave a space between each of its ends and the adjacent racks 33, 33'.

Both washing and rinsing water are discharged upon the articles supported in tank 15 from a common spray pipe. Preferably, such pipe is movable. For example, the spray pipe which includes a horizontal member 38 and two connected vertical members 39, arranged one at each end of the member 38, is pivotally supported from, and near the top edge of, one longitudinal side wall, of tank 15, as by brackets 40. Gentrally fixed to, and communicating with, the interior of member 38 is an inlet connection 41, having provision for quick detachable connection to a flexible hose as will later be described. Each member of the spray pipe is provided with suitable exit orifices to deliver the washing or rinsing water into tank 15 and distribute it over the articles there in. To secure a wide distribution of the water, without a large number of spray pipes, the one pipe is pivoted, as described, so that it may be manually rocked from the position shown in Fig. 1 to that shown by dotted lines in Fig. 2, one side wall of the tank 15 being cut away at 15' to provide space for the pipe connection to 38 to enter when rocked.

Preferably, although not necessarily, according to all features of the invention, the apertures in the spray pipe are arranged as shown in Fig. 1,that is in the form of relatively long, narrow slots 42, formed longitudinally in members 38-and 39. The slots in member 38 are directed radially down ward, when the member is. in the position illustrated in'Fig. 1 and the slots in each member 39 are directed radially out-wards toward the adjacent series of racks 33. If desired, apertures 43 (Fig. 1) may be provided in members 39 opposite from the slots 42 to direct water upon the'articles supported on the grid-like rack 34, 35.

The tank 15 is provided with a suitable cover, preferably in the nature of two fiat sections 51 (Fig. 1) hinged at 52 to the end wall of tank 15. These sections, when in open position, as illustrated, may be supported in shelf-forming position by swinging brackets 53 hinged to tank 15 to swing about vertical axes.

The power plantunit of the apparatus is preferably also portable and to this end is mounted on a wheeled frame 55 (Fig. 9). Such unit includes a suitable source of power, as an electric motor 56 which drives,

preferably throughv the intermediary of a speed reducing mechanism 57, a pump 58. All these elements, being well-known in the art, do not require detailed description and have been illustrated merely in conventional form. The intake side of pump 58 is connected to a hose 59, which preferably has interposed therein, a strainer device indicated conventionally at 60. The outlet side of pump 58- isconnec'ted to a flexible hose 61. The hose 59 and the hose 61 are adapted for connection to the suction pipe 26 and spray pipe 38, 39, respectively.

The connection of each hose with its respective pipe is preferably a quick detachable one in order that the operator may quickly free the tank unit from cumbersome unwieldy and unsightly parts before it is rolled into the dining room. Illustrative examples of such quick detachable connections are shown in Figs. 6 and 7. Generally speaking, the connection is of the plug and socket type, the plug and socket being held together by a bayonet joint.

l Thus, the described member 41 forms the socket of one quick detachable connection and a part 62, secured to hose 61, forms the lug, the parts 41 and 62 being held by I ayonet lugs 63 on one and pins 64 on the other. Preferably, a sleeve 65 of packing material is applied to the plug element 62, such sleeve being forced, by the pressure of water passing therethrough, tightly against the interior wall of member 41. The described member 31- forms the socket of the other quick detachable connection and a part 65 forms the plug. The parts 31 and 65' clamp between them a packing ring 66, the clamping being effected by bayonet lugs67 on part 65-and pins 68 on member 31.

In operation, the tank unit, disconnected from the hose 61 and hose 59, is rolled into the dining room alongside the table and the dishes stacked therein. Generally, fiat articles, as plates, saucers, platters, and so forth, are stacked on edge in the tank, being held between the slats 34 as shown in Fig. 5. Hollow articles, as cups, tumblers, and so forth, are laid on the racks 33, 33' with their open ends toward the adjacent member 39 of the spray pipe. Dishes containing food, which dishes cannot be forthwith placed in the tank 15, are placed on the tray 23, or even on the shelves 51, if necessary. The tank unit is thcn rolled into the kitchen alongside the sink, as S (see Fig. 9), the dishes containing food having been previously emptied and placed in tank 15. The

power plant unit is rolled into place as in dicated in Fig. 9. The operator then draws hot water from the faucet, as H, into a pail P and applies soap, washing powder or the like thereto, if desired, although with the machine effective washing can be accomplished it hot water alone, without soap, is used providing a sufficient volume of water is used. Assuming that soap is to be used and that the soapy solution is in pail P, the operator connects hose 61 to the spray pipe, by the quick detachable connection described, and inserts the end of hose 59 into pail P. Then motor 56 is started and the water in pail P forced through the spray pipes and slots 42 therein into the tank 15 and against the dishes therein, the spray pipes being turned back and forth manually on their pivotal support during the flow of water to increase the distribution of water over the dishes. After all the waterhas been drawn from pail P, the hose 59 is con- I nected to the suction pipe 26, whereby the water delivered through the spray pipe into the bottom section 16 is circulated again and again through the spray pipe into tank 15. After the washing operation has been accomplished the water in section 16, at least the most of it, may be removed through the storage. The bottom section 16 of tank 15 is then lowered, as illustrated by dotted lines in Fig. 1, and the articles allowed to dry, such drying being facilitated and expedited by the lowering of section 16 which permits a free circulation of air upwardly through and around the dishes. \Vhen tne section 16 is lowered, the racks 33, 33 and slats 3-H remain in the position shown, because as already described, they are supported from the tank 1:"). The dishes being in position on the racks 33, 33' and slats 34C to drain all water therefrom, dry quickly due to the natural circulation of air around them, especially as the dishes have been neared from the washing and rinsing operations.

The dishes having been dried, the tank unit, which is nowto all intents and purposes a so-ealled utility wagon is rolled to the pantry, china closet, or other place where the dishes are to be stored and the dried dishes removed.

Thus, I have provided an improved dish washing machine which is particularly adapted for washing dishes in the home in an ex editions and labor savin manner and is also adapted as a convenient means for transporting the dishes from point to point, as desired.

The invention has been disclosed herein, in an embodiment at present preferred, for illustrative purposes, but the scope of the invention is defined by the appended claims rather than by the foregoing description.

What I claim is 1. In a Washing machine, a tanit' open at its upper end, a displaceable lower section normally closing the base of the tank, supporting means above such section for the articles to be washed, said section being displat-cable after the washing operation to open the lower end of the tank and permit circulation of air therethrough, and means for holding said section in its two positions.

2. A portable washing machine, comprising, a base frame, uprights thereon, a washing tank open at its upper end and supported by said uprights above and spaced from said frame, said tank including a separable bottom section, means normally holding the latter in position to close the bottom of the tank, said section being movable away from the latter toward said base frame, and means in the tank for supporting the articles to be washed independently of said section.

3. A. portable washing machine, comprising, a base frame uprights thereon, a washing tank open at its upper end and supported by said uprights above and spaced from said frame, said tank including a separable bottom section, a suction pipe communicating with and secured to said section, means on the tank in which said pipe is slidably mounted, means on the tank normally holding the latter in position to secure the bottom of the tank in the upper position, said section being movable away from the latter toward said base frame, and means in the tank for supporting the articles to be washed independently of said section.

'HEH'RY CAVE. 

